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**Solving Decimal Equations**

Lesson 3-9

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Examples g – 3.1 = 4.5 3k = 8.1

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Examples m/5 = 1.5 = v

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**Felipe has earned $42. 50 by mowing lawns for his neighbors**

Felipe has earned $42.50 by mowing lawns for his neighbors. He wants to buy inline skates that cost $ Write and solve an equation to find out how much more money Felipe must earn to buy the skates.

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**Solve for Equation $42.50 + m = $69.95 - $42.50 - $42.50 m = $24.75**

- $ $42.50 m = $24.75 Felipe needs $27.45 more to buy the inline skates. Use inverse operation to get the variable alone on one side of the equation.

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Problem Solving The area of the floor in Jonah’s bedroom is 28 meters. If the length is 3.5 meters, what is the width of the bedroom? Area = length x width

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Problem Solving Jonah is carpeting his bedroom. The carpet cost $22.50 per square meter. What is the total cost to carpet his bedroom? Hint: total cost = area x cost of the carpet per square meter

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Solving One Step Equations with Decimals Example 1 x + 4.9 = 8.6 - 4.9 - 4.9 3.7 x = 3.7 Check: x + 4.9 = 8.6 Does 3.7 + 4.9 = 8.6? 8.6 = 8.6 Subtract.

Solving One Step Equations with Decimals Example 1 x + 4.9 = 8.6 - 4.9 - 4.9 3.7 x = 3.7 Check: x + 4.9 = 8.6 Does 3.7 + 4.9 = 8.6? 8.6 = 8.6 Subtract.

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